Mechanical Properties Of Concrete Made With Partial Replacement Of Fine Aggregate By Rice Husk Ash

This experimental study aimed to analyze the effect of rice husks as fine aggregate in concrete and to compare the results in terms of concrete compressive strength, split tensile strength, flexural strength with conventional concrete. The other objective of the study is to help the industry to make use of the waste rice husk ash as useful engineering product rather than dumping in the roadside which leads to environmental pollution and cause health hazards. The results of the study will provide knowledge to the building contractors and developers to improve the construction industry methods and services by using rice husk and to sustain good product performance and meet recycling goals. Results were recorded from the test conducted on the concrete in the laboratory where precise data were gathered and completely attained. Rice husk was partially replaced as fine aggregate in concrete and the percentage replacement was 0%, 5%, 10% and 20%. The grade of concrete used for the study is M40. Mechanical properties (compressive strength, split tensile strength and flexural strength) was determined on hardened concrete cubes after 7 and 28 days curing period and the results revealed that the strength of concrete decreases as the percentage replacement of sand increases with rice husk when compared to conventional concrete. The results also revealed that there is the possibility of replacing fine aggregate with rice husk in the production of structural concrete.